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Top rated by 25,935 customers

Air filters for ACs, furnaces and HVAC systems

1. Choose filter quality

2. Select size

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4. Select quantity

Order within 21h 56min and receive it by {{ expectedDeliveryDate }}

  • Fast, free shipping
  • Hassle-free returns
  • Guaranteed to fit

Air filter details

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Performance specs

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The right filter, without the hassle

Filters at your door in
about 48 hours

We ship from Miami, Las Vegas, Bethlehem, PA, and Dallas, so most orders arrive fast. Shipping is free on every order.

1,000+ sizes, from
0.5-inch to 5-inch

Find over 1,000 standard and hard-to-find sizes in stock, or order custom filters in dimensions up to 40 inches by 66 inches.

Shop worry-free with our 30-day money-back guarantee

Ordered the wrong size or want to return your order? Simply contact our support team within 30 days, and we'll make things right.

Trusted by 10,000+ homeowners across the US

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4.6 stars, 5243 reviews

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4.5 stars, 4314 reviews

Frequently Asked Questions

Your 20% discount is applied automatically when you arrive from Brad’s Deals. It works on orders of 6 or more filters and is added on top of our standard bulk pricing. You’ll see it in your cart before checkout.

This page shows the two most popular pack sizes that qualify for the discount. To order a different quantity, search for your size in the search bar at the top of the page. Your 20% discount still applies to any order of 6 or more filters.

  • MERV 8: basic air quality for homes without allergies
  • MERV 11: homes with pets, children, or mild allergies. It also captures fine dust and smoke particles.
  • MERV 13: our highest filtration. Best for allergies, asthma, or wildfire smoke.
  • Odor Eliminator: cooking smells, pet odors, and chemical vapors. It has activated carbon added to MERV 8 filtration.

Nominal size is the rounded size used to label and sell filters, for example 20x20x1. Actual size is the filter’s exact measurement. It’s often slightly smaller so the filter slides into the slot easily. A 20x20x1 filter, for example, measures 19.5x19.5x0.75. For some sizes the two are the same. You can see the actual size next to your selection in the size selector. If you’re unsure, order the size printed on your current filter’s frame.

We stock over 1,000 sizes. If yours isn’t listed, you can order a custom filter in sizes up to 40x66 inches on our custom air filters page. Your 20% Brad’s Deals discount still applies to custom orders of 6 or more filters.

Shipping is free on every order. We ship from Miami, Las Vegas, Bethlehem, PA, and Dallas, so most orders arrive in about 48 hours.

Your order is covered by our 30-day money-back guarantee. Contact our support team within 30 days and we’ll make it right.